why do (some) people consider MK-Ultra (CIA mind control project started 1930s) a "conspiracy theory"?

any time i've mentioned it (it seems pretty important), people have pulled out the old "conspiracy nut" card. when did things that came out in congress and subsequently DECLASSIFIED turn into "theories"?isn't this something we, as americans should be a little bit concerned about?http://www.michael-robinett.com/declass/c000.htm (declassified MKUltra documents)http://video.google.com/videosearch?hl=en&q=cathy%20obrien&sa=N&tab=wvhttp ://peyote.com/jonstef/mkultra.htmhttp://www.mindspring.com/~txporter/sec3.htmtrue- the cia wasn't established until 1947, however, the research started before that (it wasn't actually called, "MK ULTRA" at the time.)